package com.siwen.interceptor;


import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@Component
public class UserInterceptor implements HandlerInterceptor{

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object handler) throws Exception {
        HttpSession session = request.getSession(false);
        if(session != null && session.getAttribute("USER")!=null){
            return true;
        }

        throw new RuntimeException("未登陆已被拦截");
    }


}
